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NatraLock® Paperboard Portfolio

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NatraLock® Paperboard Portfolio
Our NatraLock® paperboard uses tear-resistant technology to deliver retail secure packaging featuring consumer-centric features like easy opening and product visibility.

A reliable, paperboard solution, NatraLock delivers retail security and strong printability without the need for additional plastic clamshells, wrapping materials or locked cases—helping companies work toward their sustainability goals.

Explore our NatraLock® Paperboard Portfolio

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NatraLock Face Seal

NatraLock Face Seal

NatraLock Face Seal offers reliability and durability for blister packaging applications. Its ability to achieve complete fiber tear in all directions coupled with strong ink adhesion delivers dependable performance without sacrificing visual appeal. 

Features
This packaging material offers complete fiber tear in all directions, providing exceptional durability. It ensures reliable hang strength and features a smooth surface with strong ink holdout. Consistency is maintained from roll-to-roll and sheet-to-sheet, supporting high-quality production standards.
Benefits
The material delivers secure sealing and blister integrity across a wide range of applications. It supports sturdy, dependable packaging that helps reduce unsaleables and offers consistent printability without the risk of delamination. Additionally, its composition from renewable paper fiber contributes to sustainability goals.
Applications
Ideal for various industries, this solution is well-suited for Beauty and Personal Care, Media and Electronics, Toys, Sporting Goods, Automotive, Home Improvement, and Tools.
NatraLock Protect

NatraLock Protect

NatraLock Protect is a patented paperboard with strong tear resistance to deter theft. Ideal for secure folding carton blister packs, it offers a rigid, smooth surface for excellent ink holdout and high-quality graphics.

Features
This material blends the strength of proprietary tear-resistant lamination with the versatility of paperboard. It has a smooth surface for strong ink holdout and printability, uniform polymer coat-weight, and consistent performance from roll-to-roll and sheet-to-sheet.
Benefits
Designed for secure, efficient packaging, it delivers strong performance in security carton applications. It supports high-quality graphics, maximizes throughput on high-speed equipment, and eliminates extra processing steps for faster converting and filling.
Applications
Ideal for security carton packaging, this material is widely used in Healthcare, Beauty and Personal Care, Media and Electronics, and Home Improvement industries.

NatraLock Resist

NatraLock Resist

NatraLock Resist is a tear-resistant, fiber-based alternative to traditional blister and clamshell packaging. It offers strong graphics, tamper protection, and supports both heat and RF sealing with various blister materials.

Features
This material combines paperboard rigidity with tear-resistant lamination for added durability. It seals consistently to a wide range of blister materials, including APET, RPET, PETG, PVC, and PLA. With a low seal temperature, reduced dwell time, smooth surface, strong ink holdout, and uniform coat-weight, it supports efficient, high-quality production. It also allows direct printing and includes up to 15% recycled fiber.
Benefits
Ideal for trap seal blister packaging, it delivers strong assembly and heat seal performance. It helps boost line speeds, reduce damage and ink issues, and improves converting and throughput on high-speed equipment. Its tear resistance and use of renewable fiber support sustainability and packaging efficiency.
Applications
Well-suited for Healthcare, Beauty and Personal Care, Media and Electronics, Toys, Sporting Goods, Automotive, Home Improvement, and Tools.
NatraLock Ultra Seal

NatraLock Ultra Seal

NatraLock UltraSeal offers sturdy, flexible paper-based blister and clamshell sealing with strong graphics and supports heat and RF sealing on various blister materials.

Features
Combines paperboard rigidity with tear-resistant lamination for durability. Seals consistently to various blister materials at low temperatures with faster dwell times. Features a smooth surface, strong ink holdout, uniform coating, direct printing, and up to 15% recycled fiber.
Benefits
Offers strong trap seal performance and heat seal compatibility. Increases line speeds, reduces damage and ink issues, improves print quality, and boosts converting efficiency. Supports sustainability with renewable fiber content.
Applications
Ideal for Healthcare, Beauty and Personal Care, Media and Electronics, Toys, Sporting Goods, Automotive, Home Improvement, and Tools.

Additional product information  

Sustainability  

  • All Smurfit Westrock North American paperboard mills are certified to  the SFI®, PEFC/29-31-216, FSC® Chain of Custody Standards. Contact your Smurfit Westrock sales representative for certified fiber availability for this product. 

 

Quality  

  • Produced at an ISO 9001 certified facility.  

 

Environmental and Product Safety  

  • Notices under US California Proposition 65 and the EU REACH regulation are not required.  
  • Elemental chlorine free (ECF) bleached fiber.  
  • Meets heavy metal limits of the US Model Toxics in Packaging rules and Article 11 of EU Directive 94/62/EC.  

This information is subject to change without notice. 

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